Atent office



HLSCHEUERLE.

Spring Rocking-Frames for Chairs.

Patehted'May 5.1874.

HENRY SOHEUERLE, OF NEW YORK, N. Y., ASSIGNOR OF ONE-HALF HIS RIGHT TOALBERT E. BEH, OF SAME PLACE.

IMPROVEMENT lN-SPRING RQC KING-FRAMES FOR CHAIRS.

Specification forming part of Letters Patent No. 150,436, dated May 5,1874; application filed March 20, 1874.

To all whom it may concern:

Be it known that I, HENRY SOHEUERLE, of New York, in the State of NewYork, have invented a new and Improved Spring Rocking-Frame for Chairs,Bed -Botton1s, &c., of which the following is a description:

I i The nature of my invention consists in the arrangement of six leversjointed together and provided with suitable springs in combination withcircular braces or bars on the upper and lower levers, to act asrockers, when the upper part of the frame is pressed quite down upon thelower part of saidframe.

In the accompanying drawing, Figure I represents the spring rockingframeas applied to a chair. Fig. II represents a front view and sections ofmy improved spring rocking-frame. Fig. III is a section at line ze inFig. II, showing the inside of the joint.

D D D, 850., are levers jointed together at their ends so as to form asixsided frame, turning freely on their jointpins n. The ends of saidlevers have two lugs, c o c 'u, fitting over each other, and the lugs oc of the inner lever are placed sufficiently far apart to allow theadmission of a spiral spring, m, between the same upon the joint-pin 12.(See Fig. III.) This spiral spring m is placed loosely around thejoint-pin n, with one of its ends fastened to one of the levers formingthe joint, and its other end fastened to the other lever. The ends ofthe springs m in the upper and lower joints 3 8 are attached and actagainst the up per and lower parts of their respective levers, while theends of the springs in the central joints 5 5 act against the innersides of their respective levers. By this arrangement the action ofthese springs m will force the levers apart, and any weight placed uponthe frame will cause the springs to coil tighter together around thejoint-pins a, and then force said levers back again into their originalposition as soon as the weight is removed from the frame.

In applying this spring-frame to a chair or other piece of furniture thelower lever or link D is fastened to the bottom frame A, and the upperlever D to the seat B of the chair, by means of caps G, in such a mannerthat said levers will be securely attached to their respective parts.The ends of these caps O are made circular, so that when the frame iscompressed, these caps touch each other, (see Fig. 1,) the upper part ofthe frame attached to the seat B can vibrate or rock upon the lower capattached to the frame A of the chair.

YVhen the weight upon the top part of the frame is not sufficientlygreat to force the same quite together so that the caps O touch eachother, the arrangement of the levers forming this frame vill allow avibrating or rocking motion to the seat 13. At the same time this frameacts as a spring for the seat.

Instead of the caps G to fasten the frame, flanges may be made on thelevers D to secure the same to their respective parts, and circularbraces E (see Fig. II) arranged on their inner sides or surfaces, toallowthe desired vibrating or rocking motion when the frames are forcedtogether so that these braces E touch fled.

HENRY SOHEUEBLE. Witnesses:

HENRY E. Ronnnu, ALBERT EJ312111.

